@flork I would say the main reason is that the best of Fedora is under the hood, and goes completely unnoticed by the general public. Beginners don't care how and when Wayland, PipeWire, zram or SELinux were implemented.
Other reasons:
The system requires manual intervention after the initial installation (e.g. RPMFusion)
Some choices, such as firewalld and Anaconda, are not so good for beginners